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NATURE OF OPERATIONS - NARRATIVE (Details) |  |  | 1 Months Ended | 2 Months Ended | 3 Months Ended | 4 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 07, 2017 USD ($) | Nov. 01, 2017 USD ($) shares | May 31, 2016 | Nov. 16, 2017 USD ($) | Sep. 30, 2017 USD ($) theatre shares | Nov. 01, 2017 USD ($) shares | Jun. 27, 2017 USD ($) $ / shares shares | Mar. 31, 2017 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Number of movie theatres | theatre |  |  |  |  | 12,000 |  |  |
Accumulated deficit |  |  |  |  | $ (373,193,000) |  |  | $ (360,415,000)
Converted instrument, shares issued (in shares) | shares |  |  |  |  | 1,315,326 |  |  |
Subsequent Event |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Proceeds from issuance of common stock |  | $ 30,000,000 |  |  |  |  |  |
Phase I Deployment, Phase II Development, and Services Segment |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Notes payable, net |  |  |  |  | $ 48,800,000 |  |  |
Content and Entertainment and Corporate Segments |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Notes payable, net |  |  |  |  | 74,600,000 |  |  |
Content and Entertainment and Corporate Segments | Subsequent Event |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Extinguishment of debt, amount |  |  |  | $ 46,800,000 |  |  |  |
Convertible Debt |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Extinguishment of debt, amount |  |  |  |  | $ 3,800,000 |  |  |
Convertible Debt | Subsequent Event |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Proceeds from issuance of common stock |  | 30,000,000 |  |  |  |  |  |
Extinguishment of debt, amount |  | 46,300,000 |  |  |  | $ 50,100,000 |  |
Repayments of convertible debt | $ 500,000 | $ 17,100,000 |  |  |  | $ 17,100,000 |  |
Converted instrument, shares issued (in shares) | shares |  | 2,221,457 |  |  |  | 3,536,783 |  |
5.5% Convertible Notes Due 2035 | Recourse Notes Payable |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Debt interest rate, stated rate |  |  |  |  | 5.50% |  |  | 5.50%
Percent of principal amount held by debt holders |  |  |  |  | 99.00% |  |  |
Second Lien Loans |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Debt face amount |  |  |  |  | $ 1,500,000.0 |  |  |
Second Lien Loans | Convertible Debt | Subsequent Event |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Extinguishment of debt, amount |  |  |  |  |  | $ 1,500,000 |  |
Class A common stock |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Stock split, conversion ratio |  |  | 0.1 |  |  |  |  |
Number of shares authorized for sale (in shares) | shares |  |  |  |  |  |  | 20,000,000 |
Par value per share (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 0.001 |
Maximum proceeds from sale of stock |  |  |  |  |  |  | $ 30,000,000 |
Maximum number of shares to be sold to management (in shares) | shares |  |  |  |  |  |  | 400,000 |
Class A common stock | Subsequent Event |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Number of shares issued in transaction (in shares) | shares |  | 20,000,000 |  |  |  |  |  |
Class A common stock | Convertible Debt | Subsequent Event |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Number of shares issued in transaction (in shares) | shares |  | 20,000,000 |  |  |  |  |  |
Strategic Partner | Class A common stock | Subsequent Event |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Number of shares issued in transaction (in shares) | shares |  | 19,666,667 |  |  |  |  |  |
Strategic Partner | Class A common stock | Convertible Debt | Subsequent Event |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Number of shares issued in transaction (in shares) | shares |  | 19,666,667 |  |  |  |  |  |
Chief Executive Officer | Class A common stock | Subsequent Event |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Number of shares issued in transaction (in shares) | shares |  | 333,333 |  |  |  |  |  |
Chief Executive Officer | Class A common stock | Convertible Debt | Subsequent Event |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Number of shares issued in transaction (in shares) | shares |  | 333,333 |  |  |  |  |  |

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